19799679757 has 48 divisors (see below), whose sum is σ = 24362705920. Its totient is φ = 15966720000.

The previous prime is 19799679749. The next prime is 19799679763. The reversal of 19799679757 is 75797699791.

It is not a de Polignac number, because 19799679757 - 2³ = 19799679749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19799679157) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7361869 + ... + 7364557.

Almost surely, 2^19799679757 is an apocalyptic number.

It is an amenable number.

19799679757 is a deficient number, since it is larger than the sum of its proper divisors (4563026163).

19799679757 is a wasteful number, since it uses less digits than its factorization.

19799679757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2906 (or 2895 counting only the distinct ones).

The product of its digits is 472588830, while the sum is 76.

The spelling of 19799679757 in words is "nineteen billion, seven hundred ninety-nine million, six hundred seventy-nine thousand, seven hundred fifty-seven".